Rifle bullet



Dec. 12, 1967 G. VOSS RIFLE BULLET Filed Aug. 3. 1965 I NVENTOR GUNTHER voss ATTORNEY.

United States Patent 3,357,357 RIFLE BULLET Giinther Voss, Madrid, Spain, assignor to Instituto Nacional de Industria-Centro de Estudios Tecnicos de Materiales Especiales Ini-Cetme, Madrid, Spain, a corporation of Spain Filed Aug. 3, 1965, Ser. No. 476,924

Claims priority, application Germany, Aug. 4, 1964,

6 Claims. (Cl. 10292.3)

ABSTRACT OF THE DISCLOSURE A smooth-shaped rifle bullet stabilized during flight by rotation, comprising a closed shell on its forward portion and having an asymmetric tip at the front, which causes an inclination of the bullet when entering a target.

The present invention relates to a rifle bullet provided with a jacket which is closed at its front part, or to a rifle bullet provided with a solid tip of resistant material.

The hitherto known rifle bullets, when striking low resistance targets, as, for instance, the human body, generally produce clean entry and issue holes. For this reason, the detaining power of these bullets, when one hitting bones or vital organs, is comparatively low. Therefore, this detaining power is mainly restricted to those short ranges within which the bullet has still enough kinetic energy to surely put the stricken enemy out of action, even in the case of flesh wounds which only absorb a little amount of that energy.

When the known rifle bullets penetrate deeply, they also cause a strong effect, because their axis takes a degree of inclination with the direction of the trajectory. This effect increases as the bullet penetrates more deeply. However, this effect does not generally occur, because the bullet has frequently passed through the body before taking a worthwhile inclination.

A good effect may be surely expected from the known rifle bullets only, if they are fired with such weak rotation, that the stability of rotation is not suflicient to eliminate, before striking the target, the degree of their inclination relative to the direction of the trajectory. But such a reduced rotation causes a considerable impairment of the accuracy of the shot and the bullet ballistics, as well as a reduction of bullet penetration energy. At the same time, as the stability factor increases automatically during the bullet flight owing to the bullet velocity decrease, this effect on the target is only possible at short ranges, because at these ranges, this effect may be considered as being suflicient by itself, but not at longer ranges, at which the bullet energy and, therefore, the bullet effect on the target is low. It is, however, just at these longer ranges that the effect increase on the target is necessary.

It is one object of the present invention to provide a rifle bullet which avoids the drawbacks of the known structures.

It is another object of the present invention to provide a rifle bullet wherein the tip of the bullet is of an asymmetric shape. When this bullet strikes the target, forces are generated which accelerate the bulet inclination.

It is still another object of the present invention to provide a rifle bullet wherein the turning moment produced by the inclination accelerating forces increases and the bullet inclination is produced more rapidly when the distance between the bullet center of gravity and the bullet tip is greater. It is possible to increase the effect produced by the bullet tip asymmetry through the backward displacement of the bullet center of gravity.

In addition to the effective range increase, a bullet with these characteristics offers the advantage of the possibility of reducing its caliber without decreasing the de taining power obtained with the calibers used until now.

With these and other objects in view which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawings, in which:

FIGURE 1 is an axial section of the rifle bullet, designed in accordance with the present invention;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rifle bullet partly in section, disclosing a second embodiment thereof; and FIG. 4 is a front elevation of the rifle bullet disclosed in FIG. 3.

Referring now to the drawing, and in particular to a smooth-shaped bullet provided with a jacket 2 in which the asymmetry is brought about by a beveled bullet tip 1. In spite of the beveled bullet tip 1, the bullet jacket 2 is perfectly closed, and has no opening which may produce, when the bullet hits the target, a bullet deformation that would violate the International Conventions concerning the structure of bullets, In order to get the center of gravity to be as distant as possible from the tip, the core front part 3 is made of a low-density material, as plastic, for instance, and the rear part 4 is made of a highdensity material, as lead.

Referring now again to the drawing, and in particular to FIGS. 3 and 4, a bevel 5 is made on the bullet core 6 itself. The core 6 is made of a resistant, but low-density material, as duralumin, and as well as the bullet shown in FIGS. 1 and 2, it does not undergo any deformation on striking low resistance targets. As it may be seen in FIG. 3, the jacket 7, which is made of a heavy material, as tombac, envelops the bullet rear part only, in order to get the center of gravity to be as distant as possible from the tip, so that the length of the bullet front part, which protrudes out of the jacket 7, is at least 45% of the overall length of the bullet.

While I have disclosed several embodiments of the present invention with certain useful variants thereof, it is to be understood that these embodiments are given by example only and not in a limiting sense, the scope of the present invention being determined by the objects and the claims.

I claim:

1. A substantially smooth-shaped rifle bullet stabilized by rotation, comprising a jacket extending at least over the rear part of the bullet,

a core surrounded at least at its rear part by said jacket,

and

a tip of asymmetric shape disposed in front of said 3 4 4. The rifle bullet, as set forth in claim 1, wherein References Cited said tip of asymmetric shape is formed by a bevel. UNITED STATE PATENTS 5. The rifle bullet, as set forth in claim 1, wherein S said core comprises a front part of low-density material 603,466 5/1898 Hammer 102'53 and a rear part of high-density material. 5 7401914 10/1903 PkftZ 10252 6. The rifle bullet, as set forth in claim 5, wherein 32821214 11/1966 Bnscoe 1O238 said jacket surrounding only the rear part of said core is of heavy material and said core protruding from said BENJAMIN BORCHELT Prlmary Exammer jacket is of a length amounting to at least 45% of the ROBERT F. STAHL, Examiner.

total length of said bullet. 10 

1. A SUBSTANTIALLY SMOOTH-SHAPED RIFLE BULLET STABILIZED BY ROTATION, COMPRISING A JACKET EXTENDING AT LEAST OVER THE REAR PART OF THE BULLET, A CORE SURROUNDED AT LEAST AT ITS REAR PART BY SAID JACKET, AND 